English
Related papers

Related papers: Protecting User Prompts Via Character-Level Differ…

200 papers

Facilitated by large language models (LLMs), personalized text generation has become a rapidly growing research direction. Most existing studies focus on designing specialized models for a particular domain, or they require fine-tuning the…

Computation and Language · Computer Science 2024-02-09 Cheng Li , Mingyang Zhang , Qiaozhu Mei , Weize Kong , Michael Bendersky

The generative Artificial Intelligence (AI) tools based on Large Language Models (LLMs) use billions of parameters to extensively analyse large datasets and extract critical private information such as, context, specific details,…

Cryptography and Security · Computer Science 2023-10-20 Imdad Ullah , Najm Hassan , Sukhpal Singh Gill , Basem Suleiman , Tariq Ahamed Ahanger , Zawar Shah , Junaid Qadir , Salil S. Kanhere

Large language models (LLMs) have significantly transformed natural language understanding and generation, but they raise privacy concerns due to potential exposure of sensitive information. Studies have highlighted the risk of information…

Machine Learning · Computer Science 2025-11-20 Bishnu Bhusal , Manoj Acharya , Ramneet Kaur , Colin Samplawski , Anirban Roy , Adam D. Cobb , Rohit Chadha , Susmit Jha

With the widespread use of LLMs, preserving privacy in user prompts has become crucial, as prompts risk exposing privacy and sensitive data to the cloud LLMs. Traditional techniques like homomorphic encryption, secure multi-party…

Computation and Language · Computer Science 2025-11-19 Xuan Li , Zhe Yin , Xiaodong Gu , Beijun Shen

We explore how private synthetic text can be generated by suitably prompting a large language model (LLM). This addresses a challenge for organizations like hospitals, which hold sensitive text data like patient medical records, and wish to…

Computation and Language · Computer Science 2025-02-20 Supriya Nagesh , Justin Y. Chen , Nina Mishra , Tal Wagner

The meanings of words and phrases depend not only on where they are used (contexts) but also on who use them (writers). Pretrained language models (PLMs) are powerful tools for capturing context, but they are typically pretrained and…

Computation and Language · Computer Science 2023-09-15 Daisuke Oba , Naoki Yoshinaga , Masashi Toyoda

Web-based Large Language Model (LLM) services have been widely adopted and have become an integral part of our Internet experience. Third-party plugins enhance the functionalities of LLM by enabling access to real-world data and services.…

Cryptography and Security · Computer Science 2025-12-04 Chun Jie Chong , Chenxi Hou , Zhihao Yao , Seyed Mohammadjavad Seyed Talebi

The rapid adoption of online chatbots represents a significant advancement in artificial intelligence. However, this convenience brings considerable privacy concerns, as prompts can inadvertently contain sensitive information exposed to…

Cryptography and Security · Computer Science 2024-06-21 Zhili Shen , Zihang Xi , Ying He , Wei Tong , Jingyu Hua , Sheng Zhong

We demonstrate that it is possible to train large recurrent language models with user-level differential privacy guarantees with only a negligible cost in predictive accuracy. Our work builds on recent advances in the training of deep…

Machine Learning · Computer Science 2018-02-27 H. Brendan McMahan , Daniel Ramage , Kunal Talwar , Li Zhang

Language Models (LMs) have been shown to leak information about training data through sentence-level membership inference and reconstruction attacks. Understanding the risk of LMs leaking Personally Identifiable Information (PII) has…

Machine Learning · Computer Science 2023-04-25 Nils Lukas , Ahmed Salem , Robert Sim , Shruti Tople , Lukas Wutschitz , Santiago Zanella-Béguelin

Large Language Models (LLMs) memorize, and thus, among huge amounts of uncontrolled data, may memorize Personally Identifiable Information (PII), which should not be stored and, consequently, not leaked. In this paper, we introduce Private…

Cryptography and Security · Computer Science 2025-08-22 Elena Sofia Ruzzetti , Giancarlo A. Xompero , Davide Venditti , Fabio Massimo Zanzotto

When users submit queries to Large Language Models (LLMs), their prompts can often contain sensitive data, forcing a difficult choice: Send the query to a powerful proprietary LLM providers to achieving state-of-the-art performance and risk…

Cryptography and Security · Computer Science 2026-04-21 Zheng Hui , Yijiang River Dong , Sanhanat Sivapiromrat , Ehsan Shareghi , Nigel Collier

To protect the privacy of individuals whose data is being shared, it is of high importance to develop methods allowing researchers and companies to release textual data while providing formal privacy guarantees to its originators. In the…

Machine Learning · Computer Science 2022-10-27 Justus Mattern , Zhijing Jin , Benjamin Weggenmann , Bernhard Schoelkopf , Mrinmaya Sachan

Large Language Models (LLMs) such as ChatGPT can infer personal attributes from seemingly innocuous text, raising privacy risks beyond memorized data leakage. While prior work has demonstrated these risks, little is known about how users…

Human-Computer Interaction · Computer Science 2025-09-16 Synthia Wang , Sai Teja Peddinti , Nina Taft , Nick Feamster

SpeechLLMs are increasingly deployed in professional settings where domain customisation is standard practice: users supply context in prompts with sensitive information, fine-tune on proprietary recordings, or both. We identify and…

Computation and Language · Computer Science 2026-05-28 Maike Züfle , Jan Niehues

We present an approach for generating differentially private synthetic text using large language models (LLMs), via private prediction. In the private prediction framework, we only require the output synthetic data to satisfy differential…

Machine Learning · Computer Science 2024-10-10 Kareem Amin , Alex Bie , Weiwei Kong , Alexey Kurakin , Natalia Ponomareva , Umar Syed , Andreas Terzis , Sergei Vassilvitskii

Large language models are shown to memorize privacy information such as social security numbers in training data. Given the sheer scale of the training corpus, it is challenging to screen and filter these privacy data, either manually or…

Computation and Language · Computer Science 2022-06-27 Xuandong Zhao , Lei Li , Yu-Xiang Wang

Pretrained large language models (LLMs) have revolutionized natural language processing (NLP) tasks such as summarization, question answering, and translation. However, LLMs pose significant security risks due to their tendency to memorize…

Computation and Language · Computer Science 2024-09-24 Zhepeng Wang , Runxue Bao , Yawen Wu , Jackson Taylor , Cao Xiao , Feng Zheng , Weiwen Jiang , Shangqian Gao , Yanfu Zhang

The task of text privatization using Differential Privacy has recently taken the form of $\textit{text rewriting}$, in which an input text is obfuscated via the use of generative (large) language models. While these methods have shown…

Computation and Language · Computer Science 2024-07-02 Stephen Meisenbacher , Maulik Chevli , Juraj Vladika , Florian Matthes

The study of Differential Privacy (DP) in Natural Language Processing often views the task of text privatization as a $\textit{rewriting}$ task, in which sensitive input texts are rewritten to hide explicit or implicit private information.…

Computation and Language · Computer Science 2024-06-03 Stephen Meisenbacher , Florian Matthes